[3] Amazon to See a New Cloud Market in 2013: http://www.thestreet.com/story/11800971/1/amazon-to-see-a-new-cloud-market-in-2013.html

[4] Bookshops can’t compete with Amazon on price. If they want to survive, they have to provide a personal touch: http://blogs.telegraph.co.uk/culture/allanmassie/100067629/bookshops-cant-compete-with-amazon-on-price-if-they-want-to-survive-they-have-to-provide-a-personal-touch/